[Rhodium]

Try that, works for me

replace

	$messagetext = preg_replace(
		'#(^|\[/(' . $skiptaglist . ')\])(.*(\[(' . $skiptaglist . ')|$))#siUe',
		"convert_url_to_bbcode_callback_auto_title('\\3', '\\1')",
		$messagetext
	);

to

	$messagetext = preg_replace_callback(
		'#(^|\[/(' . $skiptaglist . ')\])(.*(\[(' . $skiptaglist . ')|$))#siU',
                function($m) { return convert_url_to_bbcode_callback_auto_title($m[3], $m[1]); },		
		$messagetext
	);